Digital video distribution system
US6160544A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 12, 1997 |
| Grant date | Dec 12, 2000 |
| Priority date | — |
| Expiry date | Nov 12, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/661
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital video distribution system is disclosed which includes video terminals connected within a LAN and distributes video from a certain terminal to destination terminals, simultaneously. In this system, each transmitter terminal has an encoder that converts analog video information from a corresponding video source to digitally compressed video information. A hub are connected to the video terminals to distribute digitally compressed video information from a transmitter terminal to multiple destination (receiver) terminals in accordance with a multicast communication protocol. Each of the receiver terminals has an address filter for selecting a packet from among multicast communication packets that has a desired source address as valid video information. The receiver further has a decoder for converting digitally encoded information received as valid to original analog video information with expansion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.